improvement(workflows): Added a docker-hub version release by Tag

[yarongilor]

Once a tag is push, this new gihub action
aims to build Gemini and its docker.
Then login and push to dockerhub.

[yarongilor]

@yaronkaikov , can you please configure corresponding 2 secrets named DOCKER_HUB_USERNAME and DOCKER_HUB_ACCESS_TOKEN in order to use for uploading artifacts to dockerhub?

[dkropachev]

You don't have to export it:

Suggested change

	export ExpectedVersion=$(git describe --tags --abbrev=0)
	export DefinedVersion=$(cat cmd/gemini/Version)
	if [ "$ExpectedVersion" != "$DefinedVersion" ]; then
	echo "Expect to have '$ExpectedVersion', but got '$DefinedVersion'"
	exit 1
	fi
	EXPECTED_VERSION=$(git describe --tags --abbrev=0)
	DEFINED_VERSION=$(cat cmd/gemini/Version)
	if [ "$EXPECTED_VERSION" != "$DEFINED_VERSION" ]; then
	echo "Expect to have '$EXPECTED_VERSION', but got '$DEFINED_VERSION'"
	exit 1
	fi

[dkropachev]

Please run goreleaser instead:

Suggested change

	- name: Build and push master
	uses: docker/build-push-action@v4
	with:
	context: .
	platforms: linux/amd64,linux/arm64
	file: ./cmd/gemini/Dockerfile
	push: true
	tags: |
	scylladb/gemini:latest
	# TODO: add a new version tag as well.
	- name: Releasing gemini
	run: cd cmd/gemini; goreleaser
	# TODO: add a new version tag as well.

[dkropachev]

Suggested change

	- name: Checkout
	uses: actions/checkout@v3
	- name: Pull tags and refs
	run: git fetch --prune --unshallow
	- name: Check if version is updated
	- name: Checkout
	uses: actions/checkout@v3
	- name: Pull tags and refs
	run: git fetch --prune --unshallow
	- name: Check if version is updated

[dkropachev]

We also need a step to verify if CHANGELOG.md is updated:

      - name: Check if CHANGELOG.md has been updated
        run: |
          EXPECTED_VERSION=$(git describe --tags --abbrev=0)
          if ! grep '## \[' ./CHANGELOG.md | head -n 1 | grep "${EXPECTED_VERSION//*v/}"; then
              echo "Please update CHANGELOG.md"
              exit 1
          fi

[dkropachev]

Suggested change

	- name: Check if version is updated
	- name: Check if cmd/gemini/Version is updated

[fruch]

replaced with #427